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Re: [taigtools] Re: Crankshaft

... Sounds like something to look forward to! I m still puzzling over the pictures of your cam grinder. I d love to see it in person. ... I made the mistake

Message 1 of 7
, Apr 1, 2004

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On Sat, 3 Apr 2004, n2562001 wrote:

> It would be difficult at best to convert a lathe to a crankshaft
> grinder. My cam grinder was designed to grind cams only. However after
> much thought I have designed an attachment that will allow crankshaft
> grinding. The attachment has not been completed or tested yet but should
> not be a problem.

Sounds like something to look forward to! I'm still puzzling over the
pictures of your cam grinder. I'd love to see it in person.

> By the way, how come I never seen you at the Estevan Model Engineering
> Show last fall??

I made the mistake of getting a job in Hawaii. The job's great, the
location can't be beat, but I don't really make enough to travel that
much. I'm still looking at that ever-elusive "I'll get to go some day"
scheduling for the model engineering shows.

I m going by memory on this one. But I belive in Table top Machining it shows a guy making a crankshaft on a Sherline mill. Though if my memory is right

Message 2 of 7
, Apr 2, 2004

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I'm going by memory on this one. But I belive in "Table top
Machining" it shows a guy making a crankshaft on a Sherline mill. Though
if my memory is right he was cutting it with a end mill and not grinding
it. But grinding could be a latter step.

Tom It would be difficult at best to convert a lathe to a crankshaft grinder. My cam grinder was designed to grind cams only. However after much thought I

Message 3 of 7
, Apr 2, 2004

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Tom
It would be difficult at best to convert a lathe to a crankshaft
grinder. My cam grinder was designed to grind cams only. However
after much thought I have designed an attachment that will allow
crankshaft grinding. The attachment has not been completed or tested
yet but should not be a problem. By the way, how come I never seen
you at the Estevan Model Engineering Show last fall??

Jerry Kieffer

> You can do that kind of work on a Taig or Sherline.
>
> As far as cutting crankshafts, Kozo Hiraoka had a really nice two-

page

> explanation of how to do this in his book, "Building the Shay".

I'm

> guessing it's similar to how other people make them for IC engines.
>
> As far as grinding goes, Jerry Kieffer made a really neat camshaft
> grinding tool out of Sherline parts. I don't know for certain,

but I'm

> guessing you could adapt the idea to crankshafts.
>
> Using Hiraoka's description and a toolpost grinder, my guess is

publications available from Lindsay Book's. I became of aware of a
book on lathe work and what is possible with said lathe. There is a
book called Practical Metal Turning by Joesph Horner, and in it there
is a treatise on how to turn a multiple-throw crankshaft.
I hope that this is of use to you or anyone else contemplating such
an adventure.

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